G221 Natural Convective Oscillatory Flow in a Horizontal Concentric Annulus : Simultaneous Measurement of Temperature and Velocity with Two-color LIF and PIV

Abstract

Simultaneous measurement of temperature and velocty has been carried out for natural convective oscillatory flow in a forizontal concentric annulus by using Two-color LIF and PIV. The outer and inner diameter ratio of the annulus was 2.0 and the Rayleigh number was 1.0×10^<-7>. A counter-rotating eddy comes into existance near the oscillatory buoyant plume and the heat transport mechanism has been discussed based on the characteristics of temperature and velocity fields.